3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring IPv6 PIM-SM 687
Configuring a BSR admin-scope region boundary
A BSR has its specific service scope. A number of BSR boundary interfaces divide a
network into different BSR admin-scope regions. Bootstrap messages cannot cross
the admin-scope region boundary, while other types of IPv6 PIM messages can.
Follow these steps to configure a BSR admin-scope region boundary:
Configuring global C-BSR parameters
The BSR election winner advertises its own IPv6 address and RP-Set information
throughout the region it serves through bootstrap messages. The BSR floods
bootstrap messages throughout the network periodically. Any C-BSR that receives
a bootstrap message maintains the BSR state for a configurable period of time
(BSR state timeout), during which no BSR election takes place. When the BSR state
times out, a new BSR election process will be triggered among the C-BSRs.
Follow these steps to configure global C-BSR parameters:
n
About the bootstrap timeout time:
■ By default, the bootstrap timeout time is determined by this formula: Bootstrap
timeout = Bootstrap interval × 2 + 10. The default bootstrap interval is 60
seconds, so the default bootstrap timeout = 60 × 2 + 10 = 130 (seconds).
■ If this parameter is manually configured, the system will use the configured
value.
About the bootstrap interval:
To do... Use the command... Remarks
Enter system view system-view -
Enter VLAN interface view interface interface-type
interface-number
-
Configuring a BSR
Admin-scope region boundary
pim ipv6 bsr-boundary Required
No BSR admin-scope region
boundary by default
To do... Use the command... Remarks
Enter system view system-view -
Enter IPv6 PIM view Pim ipv6 -
Configure the Hash mask
length for RP selection
calculation
c-bsr hash-length
hash-length
Optional
126 by default
Configure the C-BSR priority c-bsr priority priority Optional
0 by default
Configure the bootstrap
interval
c-bsr interval interval Optional
For the system default, see
"Note" below.
Configure the bootstrap
timeout time
c-bsr holdtime interval Optional
For the system default, see
"Note" below.